Home / 13,065.20-19,576.20-11,121.20

Finding the Fourth Proportional to 13,065.20, 19,576.20 and 11,121.20

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Solution

The fourth proportional to 13,065.20, 19,576.20 and 11,121.20 is: 16,663.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,065.20 : 19,576.20 = 11,121.20 : x
  2. Step 2: Convert to fraction form
    13,065.20/19,576.20 = 11,121.20/x
  3. Step 3: Cross multiply
    13,065.20x = 19,576.20 × 11,121.20
  4. Step 4: Simplify right side
    13,065.20x = 217,710,835.44
  5. Step 5: Solve for x
    x = 217,710,835.44/13,065.20
  6. Step 6: Final answer
    x = 16,663.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.